Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752688Ab0BWMlG (ORCPT ); Tue, 23 Feb 2010 07:41:06 -0500 Received: from 81-174-11-161.static.ngi.it ([81.174.11.161]:37749 "EHLO mail.enneenne.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752229Ab0BWMk6 (ORCPT ); Tue, 23 Feb 2010 07:40:58 -0500 From: Rodolfo Giometti To: linux-kernel@vger.kernel.org Cc: Andrew Morton , David Woodhouse , Dave Jones , Sam Ravnborg , Greg KH , Randy Dunlap , Kay Sievers , Alan Cox , "H. Peter Anvin" , Ingo Molnar , Michael Kerrisk , Christoph Hellwig , Alexander Gordeev , Rodolfo Giometti Date: Tue, 23 Feb 2010 13:40:31 +0100 Message-Id: <1266928835-5435-3-git-send-email-giometti@linux.it> X-Mailer: git-send-email 1.6.3.3 In-Reply-To: <1266928835-5435-2-git-send-email-giometti@linux.it> References: <1266928835-5435-1-git-send-email-giometti@linux.it> <1266928835-5435-2-git-send-email-giometti@linux.it> X-SA-Exim-Connect-IP: 192.168.32.37 X-SA-Exim-Mail-From: giometti@enneenne.com Subject: [PATCH 2/6] ldisc: new dcd_change() method for line disciplines. X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on mail.enneenne.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1879 Lines: 55 Signed-off-by: Rodolfo Giometti --- Documentation/serial/tty.txt | 4 ++++ include/linux/tty_ldisc.h | 8 ++++++++ 2 files changed, 12 insertions(+), 0 deletions(-) diff --git a/Documentation/serial/tty.txt b/Documentation/serial/tty.txt index 5e5349a..7c90050 100644 --- a/Documentation/serial/tty.txt +++ b/Documentation/serial/tty.txt @@ -105,6 +105,10 @@ write_wakeup() - May be called at any point between open and close. is permitted to call the driver write method from this function. In such a situation defer it. +dcd_change() - Report to the tty line the current DCD pin status + changes and the relative timestamp. The timestamp + can be NULL. + Driver Access diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index 0c4ee9b..526d66f 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -99,6 +99,12 @@ * cease I/O to the tty driver. Can sleep. The driver should * seek to perform this action quickly but should wait until * any pending driver I/O is completed. + * + * void (*dcd_change)(struct tty_struct *tty, unsigned int status, + * struct timespec *ts) + * + * Tells the discipline that the DCD pin has changed its status and + * the relative timestamp. Pointer ts can be NULL. */ #include @@ -136,6 +142,8 @@ struct tty_ldisc_ops { void (*receive_buf)(struct tty_struct *, const unsigned char *cp, char *fp, int count); void (*write_wakeup)(struct tty_struct *); + void (*dcd_change)(struct tty_struct *, unsigned int, + struct timespec *); struct module *owner; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/